KNOCDIC Curve rectangular espresso knock box in matte charcoal grey with a smooth curved front and real oak wood bar.
Infographic chart detailing the space-saving benefits of a rectangular coffee waste bin compared to a standard round knock box.
A slim charcoal grey curved espresso knock box tucked neatly into a narrow gap on a kitchen counter coffee bar.
Using an espresso portafilter to tap a spent coffee puck into a custom pink and grey rectangular knock box.
Measurement diagram showcasing the precise width, depth, and height of the curved rectangular coffee knock box.
Close-up product breakdown graphic displaying the non-slip base, matte finish texture, and solid oak bar.
Red and yellow container on a kitchen counter next to an espresso machine.
Matte yellow and desert tan espresso knock box in a kitchen setting with coffee equipment.
Color swatches for a product with options including Ash Grey, Sakura Pink, Desert Tan, Charcoal Brown, and Scarlet Red.
Color options chart displaying 27 custom matte, metallic, galaxy, and marble colors for the KNOCDIC knock box and espresso machine accessories collection.

COFFEE KNOCK BOX

De Curve | Knock Box met eikenhouten of Iroko-klopstang

£39.29 GBP
Slim 10 cm width
Holds 10–12 pucks
Real oak knock bar
Product Description

Herdefinieer je koffieritueel met The Curve, een afklopbox die elegantie in beweging belichaamt. Geïnspireerd door zachte bogen en sculpturale silhouetten, geeft The Curve je koffiezetstation een zachtere, vloeiendere esthetiek – zonder in te leveren op prestaties. De afgeronde contouren en gladde, matte afwerking creëren een rustgevende uitstraling, terwijl de zorgvuldig geïntegreerde eikenhouten/iroko-afklopbar precisie en duurzaamheid biedt bij elk gebruik. Of je nu je ochtendespresso perfectioneert of een weekendkoffiesessie organiseert, The Curve voegt een tastbare, designgerichte touch toe aan je dagelijkse routine. De perfecte aanvulling voor wie verlangt naar een vleugje innovatie in zijn dagelijkse koffiezetroutine.

Productafmetingen en -gewicht:
1. Rechthoek - 10 x 16 x 14,5 cm (Capaciteit: 10-12 opnamen) ~290 g
2. Vierkant - 16 x 16 x 14,5 cm (Capaciteit: 20-22 opnamen) ~430 g

Eiken/Iroko Knock Bar Afmetingen:
1. Rechthoek - Diameter 2,52 cm x Lengte 10 cm
2. Vierkant - Diameter 2,52 cm x Lengte 16 cm

729 possible colour combinations
✔ Made to order in 1–4 business days
Free UK shipping

Pairs well with

Cleaner Coffee Corners

Keep your space tidy with less mess and fuss.

Solid Oak Knock Bar

Real oak adds a natural, premium finish to your daily coffee setup.

Built to Last

Durable, impact-resistant and made for daily use.

Loved by Home Baristas

Designed in the UK for the home espresso community.

Why choose Rectangular?

Narrow footprint

Just 10 cm wide to fit tight spaces next to your grinder or on compact coffee bars.

Rectangular knock box in a narrow coffee setup

Tidy workflow

Designed for quick, clean knocking without cluttering your setup.

Portafilter knocking coffee puck into a rectangular knock box

Custom colour pairings

729 colour combinations to match your machine, space and style.

A note on 3D printing

Each KNOCDIC® knock box is 3D printed in small batches. Subtle layer lines may be visible — this is a natural part of the process and a mark of its origin.

Why we 3D print our products →

Materials & care

Body: Premium plant-based PLA

Knock bar: Solid real oak wood

Hand wash only; avoid dishwasher and high heat.

Complete your coffee corner

KNOCDIC metallic black espresso WDT tool resting inside its custom integrated magnetic docking holder.

Magnetic WDT Tool

Improve extraction with even distribution

From £15.29
Espresso Puck Screen and Walnut Holder Set - Knocdic

Puck Screen Set

Cleaner extractions with less mess

From £18.99
KNOCDIC Espresso Workflow Upgrade Kit with portafilter holder, WDT tool and puck screen

Portafilter Holder

Keep your portafilter tidy and close by

From £18.99
KNOCDIC Clean Coffee Station Kit with knock box, brush set and coffee cloth

Cleaning Brush

Sweep away coffee grounds in seconds

From £15.99

FAQs

How many coffee pucks can the rectangular knock box hold?

The rectangular knock box holds approximately 10–12 espresso pucks, depending on puck size and moisture level. It is ideal for daily home espresso use without taking up too much counter space.

Is this knock box suitable for narrow coffee setups?

Yes. This design is only 10 cm wide, making it perfect for narrow gaps beside your grinder, espresso machine, or compact coffee station.

Which inner colour is best?

For everyday use, we usually recommend a darker inner colour such as Matte Black, Charcoal, or Ash Grey, as coffee marks are less visible.

Is the oak knock bar removable?

Yes, the knock bar is designed to be removable, making the knock box easier to clean and maintain.

How do I clean the knock box?

Simply empty the used coffee pucks and wipe the box with a damp cloth. Please avoid putting it in the dishwasher, as high heat may affect the 3D printed material.

What material is it made from?

The knock box is 3D printed using durable PLA-based material and finished with a real oak knock bar. Slight layer lines are part of the 3D printed finish and make each piece unique.

Is it heavy enough to stay in place?

Yes, it is designed to feel stable during daily use while still being lightweight enough to move, empty, and clean easily

Is this better than the square knock box?

Choose the Rectangular Knock Box if you want a slimmer footprint for tight spaces. Choose the Square Knock Box if you want a larger capacity and fewer trips to empty it.